# File lib/em/streamer.rb, line 77
    def stream_one_chunk
      loop {
        if @position < @size
          if @connection.get_outbound_data_size > BackpressureLevel
            EventMachine::next_tick {stream_one_chunk}
            break
          else
            len = @size - @position
            len = ChunkSize if (len > ChunkSize)

            @connection.send_data( "#{len.to_s(16)}\r\n" ) if @http_chunks
            @connection.send_data( @mapping.get_chunk( @position, len ))
            @connection.send_data("\r\n") if @http_chunks

            @position += len
          end
        else
          @connection.send_data "0\r\n\r\n" if @http_chunks
          @mapping.close
          succeed
          break
        end
      }
    end